The Quick Turnaround is a small but very useful technique that can shave frames off of every backwalk you do. It shortens (and in some cases, eliminates) the amount of time you spend waiting for the camera to swing behind Link after holding Z/L, allowing you to start backwalking earlier than normal.
You may have noticed that the steps to perform the trick sound very similar to an inverse camera angle. This is no coincidence; a quick turnaround is just an inverted camera angle cut short. To switch between the two, control how long you wait on step 3; if you wait longer, you'll get an inverted camera. If Link isn't turning around at all, you're not waiting long enough.